My Qualcomm snapdragon 615 device overheating [65-75c]

By Arul Prabhin
in Android Support

 Share

Recommended Posts

Rookie

Arul Prabhin

Posted
Posted

recently i have bought a brand new phone named "yu yureka" from indian manufacturer micromax

Chipset Qualcomm MSM8939 Snapdragon 615 CPU Quad-core 1.7 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53 GPU Adreno 405

Internal 16 GB, 2 GB RAM

WLAN Wi-Fi 802.11 b/g/n, hotspot Bluetooth v4.0, A2DP GPS

Yes, with A-GPS

Sensors Accelerometer, gyro, proximity

Nattery: Li-Po 2500 mAh battery

and it supports 4G LTE, dual sim(sim1=4G sim2= 3G)

 

though it have lot of software issues (its similar to 1+1 and uses cyanogen mod os/kitkat 4.4.4 preinstalled) they even said rooting doesnt violate warranty so i rooted too

i found temporary fixes for the software issues also calibrated the battery coz it was draining to 0% straight from 48% everytime and now its fixed

 

the real problem is HEATING.. its a hot stove

 

in pocket = 35-42c

browsing or call, messaging = 45-48C

skype, whatsapp=50-55c

small games=55-58c

kickass games=65-67c and sometimes 69c but soon comes back to 65c

while doing stress test/benchmark it went up to 70c and even stayed @ 75c for a while like when floating no testing.. sometimes it went to 77c during the process

I COULD MAKE OMLET @ THAT TEMP..lol

 

i reported to the officials and they said its NORMAL (?? really??? )

i even set cpu governer to balanced/power saving also set the governing mode to INTERACTIVE.. and underclocked the CPU to between 400MHz to 933 MHz it did reduce the temp by 2-3 degrees but not much..

 

on cpu-z i have noticed that all the 8 cores are always active.. and the speeds are always varying.. one sec it will b 400MHz then within secs it hoes to 800 then soon to 933 then to 600 then back to 933.. its not stable even when no other apps are running

 

is it coz of badly written cynogen mod? or its a hardware issue? or is it really the normal temperature as the officials said?? [ on xda forums i found that ppl said cpu can withstand 100c and cutoff temp is 90c only] i even found that ppl having same issue on htc one, samsung galaxy s4, moto G... so  its the same with all octa core cpu phones?? please help me out guys.. im worried if my phone might explode.. [ps: battery temp is never over 40c.. its always between 32-38c never more]

Grand Master

vcfan

Posted
Posted

its probably a badly designed phone that doesn't dissipate heat properly.

 

your phone wont explode as long as you make sure battery never crosses 50C(even then it wont actually explode but then it'll be operating outside normal temperatures and the results are unpredictable).

  • Arul Prabhin
  • Like 1
Rookie

Arul Prabhin

Posted
  • Author
Posted

yes with stocck OS.. stock OS is cyanogen itself.. this one is the same as 1+1.. cyanogen will directly send the OTA updates..

 

i have tested moto E which have a quadcore processor that one also have the same base temperature as mine but that phone's temperature doesnt cross over 60C but for the same game it went to 68c

 

i called the customer care and they said its NORMAL for this processor and told me to wait for 2-3 days as they are gonna release a FIX.

using cpu-z i have noticed that all the 8 cores are always active and the speed isnt always stabilized it always flexuates between low and high in a increasing then decressing manner within seconds... i observed for 10 secs and within that 10 secs the cps speeds went from 400 mhz then 1.2ghz then 600mhz then 933mhz and then 400 mhz again.. this was going on and on.. so its a OS issue?? may b the OS isnt handling it well??

 

ps: once i have set the low and high speed ranges to the processors to 633 Mhz.. and in cpu-z i found that only 4 cores were set to 633 mhz other 4 cores were going high and low as usual

Mentor

MikeM97

Posted
Posted

yes with stocck OS.. stock OS is cyanogen itself.. this one is the same as 1+1.. cyanogen will directly send the OTA updates..

 

i have tested moto E which have a quadcore processor that one also have the same base temperature as mine but that phone's temperature doesnt cross over 60C but for the same game it went to 68c

 

i called the customer care and they said its NORMAL for this processor and told me to wait for 2-3 days as they are gonna release a FIX.

using cpu-z i have noticed that all the 8 cores are always active and the speed isnt always stabilized it always flexuates between low and high in a increasing then decressing manner within seconds... i observed for 10 secs and within that 10 secs the cps speeds went from 400 mhz then 1.2ghz then 600mhz then 933mhz and then 400 mhz again.. this was going on and on.. so its a OS issue?? may b the OS isnt handling it well??

 

Let's hope for nothing out there that can't be fixed .

Nothing certainly yet .

I still suggest you to send it to a repair service .

  • Arul Prabhin
  • Like 1
Rookie

Arul Prabhin

Posted
  • Author
Posted

now there is a new issue.. phone shuts off itself and wont turn on.. i had to remove and reinsert the battery and then power on to make it work back again... battery isnt draining though ( before calibrating the battery i had the same issue) what else could have the reason now ( the cpu temp was at 55 which is quiqt normal for my device now a days)

Grand Master

Anibal P

Posted
Posted

Sounds like a lemon to me, this is why I avoid no name brands like this one, it's always a crap shoot, and you generally end up with junk 

 

The saying is true, you get what you pay for, cheap will always be bad 

  • Arul Prabhin
  • Like 1
Mentor

MikeM97

Posted
Posted

 

now there is a new issue.. phone shuts off itself and wont turn on.. i had to remove and reinsert the battery and then power on to make it work back again... battery isnt draining though ( before calibrating the battery i had the same issue) what else could have the reason now ( the cpu temp was at 55 which is quiqt normal for my device now a days)

 

 

It can be software's and even hardware's fault ...

That's usually happens after root + un - root process ...

Veteran

BooBerry

Posted
Posted

I observed that all the 8 cores in the processor are running simultaneously without sleeping and this could be the reason for the large heat and huge battery drain.

whatever the power mode(power saving ,balance or performance) the phone is running on all cores. Ideally when no background work or no cpu intensive work is goining on cpu must switch to one or two cores but here with yureka its not happening.It is running on all cores. The problem in kernel should be resolved soon according to CM devs.

 

 

 

 

This issue appears confined to this specific device on cm11. The internal test builds of cm12 for tomato do not have this issue.

  • magicmike, MrPringles, Miss Contractility and 5 others
  • Like 8
  • 2 weeks later...
Veteran

BooBerry

Posted
Posted

i heard so too.. thats y waiting for the cm12's release.. whichis under public beta testing now. i heard the reviews they said better multitasking and no crashing of apps n all.. and no heating issues yet.

 

 

Yes quite correct.

Not sure about battery Info though.

This topic is now closed to further replies.
 Share
Go to topic listing

  • Posts

    • Nothing kills CMF Phone 2 Pro's successor due to rising memory prices

      By monterxz · Posted

      As I've been usually saying lately - we all can thank "AI" for this.
    • Windows 11 version 26H2 is now available for testing in the latest preview build

      By +TRS-80 · Posted

      Friday Windows 11 preview builds are here. Insiders in the Experimental (formerly Dev) and Beta Channel can download builds 26300.8697 and 26220.8690. My Windows11 device on the Preview Channel just got 26220.8728. My guess is this build is a nightly update from 26220.8690.
    • Traffic has a surprisingly unexpected impact on your surroundings

      By hellowalkman · Posted

      Traffic has a surprisingly unexpected impact on your surroundings by Sayan Sen Image by Radik 2707 via Pexels A collaborative study by researchers from several Israeli institutions found that everyday pollution from traffic and industrial activity measurably changed the atmospheric electric field over the Tel Aviv metropolitan area, providing new evidence of how human activity can influence the lower atmosphere. The research was led by Dr. Roy Yaniv of the Hebrew University of Jerusalem and the Gertner Institute at Sheba Medical Center, Dr. Assaf Hochman of the Fredy & Nadine Herrmann Institute of Earth Sciences at the Hebrew University, and Prof. Yoav Yair of Reichman University. The study also involved Itay Froomer, a student from Hadera High School and the Israeli Museum of Medicine and Science (Technoda), who carried out the work as part of the Ministry of Education's 5-unit physics research track. The researchers focused on the atmospheric electric field under fair-weather conditions. Even in the absence of storms, a weak electric field naturally exists between Earth's surface and the atmosphere. One of the main ways scientists measure this field is through the Potential Gradient (PG), which is the inverse of the vertical component of the electric field. PG is a key part of the global electric circuit, a planet-wide system of electrical currents maintained by thunderstorms and electrified clouds around the world. Scientists have long known that the atmospheric electric field can be influenced by factors ranging from large-scale atmospheric processes to local weather conditions such as dust, fog and clouds. Human-made pollution is also known to play a role, but understanding exactly how urban emissions affect the electric field close to the ground has remained an area of ongoing research. To investigate this relationship, the team analyzed measurements from a newly installed electric field mill, an instrument used to continuously monitor the strength of the atmospheric electric field. The instrument was installed at the Center for Technological Education (Roter House) in Holon and became operational in August 2024. It was funded by Israel's Ministry of Education and the Holon municipality. The electric field mill forms part of a broader monitoring network that includes nearby meteorological stations and air-quality monitoring sites. This allowed researchers to compare electric field measurements with detailed weather data and pollution records to better understand what was driving changes in the Potential Gradient. The study focused on two major urban pollutants: fine particulate matter (PM2.5) and nitrogen oxides (NOx), both commonly produced by vehicle traffic and industrial activity. PM2.5 refers to microscopic airborne particles small enough to remain suspended in the atmosphere for extended periods, while NOx is a group of gases released during fuel combustion. Researchers examined daily, weekly and seasonal patterns in the atmospheric electric field and compared them with changes in pollutant concentrations. Their analysis revealed a clear relationship between NOx levels and changes in the Potential Gradient, particularly during morning and evening rush hours when traffic emissions were at their highest. “What we observe is a direct physical link between emission peaks and electrical variability,” explained Dr. Roy Yaniv. “NOx reduces atmospheric conductivity very quickly, so the electric field responds almost instantaneously during traffic rush hours.” Atmospheric conductivity describes how easily electrical charges move through the air. According to the researchers, nitrogen oxides rapidly alter this conductivity, causing a near-immediate response in the electric field. PM2.5, however, was associated with a delayed response. The researchers attributed this difference to the particles' longer atmospheric residence time, meaning they remain in the atmosphere for longer periods, as well as their different microphysical interactions with surrounding air and atmospheric components. The study also identified a pronounced "weekend effect." In Israel, traffic volumes and some industrial activity decline significantly on Fridays and Saturdays. During these periods, concentrations of both NOx and PM2.5 dropped, and corresponding changes were observed in the atmospheric electric field. “The weekend signal demonstrates just how sensitive the electric field is to changes in human activity,” the researchers noted. “When emissions decline, the electrical environment adjusts at once, providing a high-resolution indicator of urban atmospheric conditions.” The findings showed that pollution levels can influence not only the chemical composition of the atmosphere but also its electrical properties. Researchers said the results strengthened the case for using atmospheric electricity as an additional tool for environmental monitoring, particularly in densely populated urban areas where anthropogenic, or human-caused, influences are most pronounced. The study also pointed to potential public health applications. By combining air-quality measurements with observations of atmospheric electricity, researchers said they could gain a more complete picture of how urban atmospheric conditions change over time. “Integrating air-quality data with electric-field measurements gives us a clearer picture of how the lower atmosphere evolves moment by moment,” the researchers added. “It’s a framework that can support both scientific insight and practical environmental decision-making.” Beyond the scientific findings, the project highlighted a collaboration between universities, public institutions and secondary education. Researchers said the work demonstrated how students could take part in real-world environmental research while contributing to studies of air quality, atmospheric processes and their potential effects on society. Source: Hebrew University, ScienceDirect This article was generated with some help from AI and reviewed by an editor. Under Section 107 of the Copyright Act 1976, this material is used for the purpose of news reporting. Fair use is a use permitted by copyright statute that might otherwise be infringing
    • Microsoft confirms Windows 11 26H2, urges IT admins to prepare for release

      By +TRS-80 · Posted

      We aren't even at the all-star game and Microsoft is talking about an update that will most likely be released during the World Series if not after. A lot can happen in the world between now and the 2026 World Series, including the 2026 FIFA Cup. Tell me about it again after the FIFA Cup is concluded. That should allow plenty of time to prepare for it.
    • Microsoft: Windows 11 could finally solve a major issue across AMD, Nvidia, and Intel GPUs

      By Jdoe25 · Posted

      Great, tell me when I have a "Bad Pool Caller" elsewhere not in Windoze.

  • Recent Achievements

    • Week One Done
      AMV earned a badge
      Week One Done
    • One Month Later
      AMV earned a badge
      One Month Later
    • Collaborator
      ryansurfer98 went up a rank
      Collaborator
    • One Month Later
      Eurosoft10 earned a badge
      One Month Later
    • Week One Done
      Eurosoft10 earned a badge
      Week One Done

  • Popular Contributors

    1. 1
      +primortal
      542
    2. 2
      +Edouard
      186
    3. 3
      Michael Scrip
      77
    4. 4
      PsYcHoKiLLa
      77
    5. 5
      Steven P.
      71
    Show More

  • Tell a friend

    Love Neowin? Tell a friend!